Sewing-machine repair vise



395%]? M. ENGWER c; MACHINE REPAIR 'VIS FEWIN Filed Dec, 1]., .1947

INVENTOR MAX INGWER the yoke and--extendingthrough selec Patented Feb.21, 1950 SEWING-MAGHIN REBAIR n rwcrr w-Yo k N-z Xwa S n I- o; Q9 o atesewin vMwh ne-d s il lilmCm, Ina). New York, N; Y:, a corporation of NewYork Applioationfleeegpher 11, 1947, Serial vNo-- 791;];332

provid afiuni et form of w rk, h ld r hiq w l besmall: ndu omnac l n; di n, o ak up but. sma l; Sh ne, 1 a. en h, a d,.-. ut o h ay,- hn-..n .1in. aetu 'li se ic nsi'whith wit s ma y advant s. a b nex ens vel pr dud ndi lsem 51:.

t d s ble lqje t e ained h in enio 'then lfea ur f on t z iqtion .9 1

vh e ticm a .re atiq s. i part inv d? th v ntio rese or h qr illapneer nenours zi' e l ow n l net fiqationl he a a company n nd f rm i enar orthe sn at ono il ustra pre ent ommercial embodiment of the invention.Structure, however, may be n odified andehangedas l egargis thisillustration, all withinthe broad;scopeof the invention as hereinafterdefinegi and claimed;

Fig. linthe drawing is atopplan view. of'the work holder Fig. 2'is abrokenpart:sectionalside view of-"the same with the outline of a sewingmachine held therein indioatedinbrqken lines;

Fig; 3is an enlarged'broken,sectional-view taken on substantially theplane of "line 3 j3 of Fig '2; and

Rig. 4* is a broken part sectional detail of a slightly modified iprm ofconstruction.

Thebase oftheholder, indicated at'ii; may be of any preferred size andshape and when designed to bemountedpn a =beneh such as shown at 6 inFig. 2, be arranged to accommodate any required number-ofhold-downbolts- 1-.

Swiveled on the base is an upright post-Bfotkd at the topat;&*tp;aoppng1rnodate the; web portion H) of atiiting head I I.

A riveted stud l2 engagegithe armsof the yoke 9 provides the pivotalsupport for-: and a; pin l3-removab1y engagegl in the ing's- M in theweb Ni; affords Ineans f; and securing-the headin different angularpositions.

Inthe present illustratipnthere are three siioh aw i s, n in heheaifi beseeme as shown in'Fig'\ 2; in a 45 tiltdposition or in the horizontal orvertioal positions.

y ewri e le'e ricz Bettaneu aele edeflaii ese '5 M a lzpesit a hrizontalfno t jn s Th i t n -head tructura si howrn ye-havin y indri al.bea ing 'J- xt d g he ero -hl, n itudinall i ned el b ove the web It)and atarightangleltothe pivotal axis m I2, ofthe heit d lournal d nfihstbeatin s thehub, par-119111 The outer, relatively, n ovablesv-isevjaw. 2 l1 is hown rr e by .a 9 t0r= e lidi freely 1:, thr u hhe-tu u aehuh n r ierw hei nner/ aw nd: he" wo- Jew m; nfined to rn.weathe b ayinao rst eqina ipu ni hen zs ard guides 22, 23, in looselysliding relation,

he ou h.- a ed sta e-2:2, s sh wn; at-m u wnn net utwaidmstension ift hbmipnl h z eee niaw iaadthesi lerlvf hels utsmalle nersii; i;sh9w, 1,.9rmd as; aninwar extension ofthe outer jaw 20.

heiaw-wn ine b t; 2! hQWn' SQYBW 25. hr a d h ref t x ends hr u h, he. 11 9 o he ime -v ti-a ce iryineaheedl e l 3* aee bl a with h i nsi. h u h'8. of the nne aw to draw he n e l aw oward e nner; Jaw nd seem tinh ldi.l e iqa 0 The air of ise awsma v esqu ldin an enela rele iont o which hy ma h fl v ckei' ea -rs a. damn. crew 5. r w hrea w in th a in mpositon o. Qneagethe 111. 9 fih lemme)? 35 Sixm arly, th no tt,v ma he. sewedh vari us n itions o whiph tmav he urnettb a clamp. sQ wv 5., F gs-t dqzvumi i th pueh h ket Q1" co umn, a rtiq 1 Qfth base nto: n a ement. th.h ind e. qn ip .40, zaio med a th JQw x-en llfi post,

To h e he 1 9st aeains jaqqidental e ewa rom h se a. smear ng. 2 ash wnlni l ee v 2 engaged in a groove '30 at'the lower enpl or the malls:nmeitipn e qonaa e withastqn 5. 1 esl er; 1 em i ded eti he'z owen. nd xhe ocket 21 o th Spindle,

v imi hen-uh; not; he 'se nae-,n' ow held against accidentalremoval fromthe 'ing 1 iv the-ultimate dh ymeeni of aisnanj e 82 h mle, 55 Forlding; e mach ne a ndica eqewzt F at-the nner aw may 'in'two may beopened as far as desirable and during this, as well as in the subsequentmovement of tightening the jaws on an inserted object, both jaws will beretained in oppositely facing relation regardless of their turning inthe bearing I! in the head. The clamp screw may be tical, horizontal orintermediate inclined position of the vise and it will be clear thatinstead of just having these three set positions, other openings M forthe holding stud 13 may be provided 'in the web of the tilting head or aclamp screw may be used in place of the stud I3 to secure the tiltinghead in any desired angular position.

With the screw 26 released, the post 8 may be turned about itsverticalaxis to carry the sewing machine or other supported object intoany lateral position most convenient or accessible for the repair workto be performed.

Thus it will be seen that the vise actually is capable of universaladjustment to turn the supported object over or in various differentpositions best suited for the work in hand.

The parts of the device are few and of sturdy construction. These areeasily assembled, or disassembled, if required, and they are compactlyarranged so as to take up but small space when not in use. As Fig. 2indicates, the head may be tilted to raise the vise into verticalposition so that it will, if standing directly above the base, occupypractically no greater cross sectional dimensions than the base itself.

The spindle or pivot portion 28 of the post 8 is heavy and strong enoughto carry the full load gripped in the vise and to avoid breakage in casethe vise should be dropped or lowered suddenly about the horizontalpivot axis l2. For such .reasons the spindle may usually be made as aseparate piece, such as an accurately finished, heavy steel pin, asshown. This pin, as illustrated in Fig. 2, may be fixedly secured at ina socket provided to receive it in the post 8 and i turn in the socket21 provided for it in the base or, as alternately shown in Fig. 4, thespindle or pivot stud member 36 may be fixedly secured by set screws 31in the socket 21 in the base and be rotatably received in the socket 38provided for it in the post. In the latter instance the clamping screw26 is screw threaded in the socket por-- "tion of the post in positionto engage that portion of the spindle on which the post is rotatablymounted.

As also shown in Fig. 4, the clamping screw 28 may enter in a groovedportion 39 of the spindle to avoid scratching, marring or indenting thecylindrical portion of the spindle on which the post rotates.

To prevent accidental separation or removal of the post from the base inthe Fig. 4 construction, a set screw 40 may be provided in the socketportion of the post entering the annular groove 39 sufficiently to holdthe post to the base, preferably, however, without interfering with freerotary adjustment of the post on the base.

The clamp screw 25 which secured the clamp jaws in various positions ofrotary adjustment in the head, may engage in an annular groove M in thehub portion l8 so as to avoid marrlng this rotatably adjustable element.Similarly, an annular groove to accommodate the inner end of the clampscrew 26, Fig. 2, may be sunk in the cylindrical surface of the bearingspindle 28.

To avoid accidental, unintentional separation of the parts, such asmight result from sudden movements of the vise when holding a heavymachine, the snap rings 29 and 32 which, in the first illustrated formof the invention, rotatably confine the post on the base and hold thehub of the clamp jaws rotatably in the head, may be of flat crosssection, substantially as indicated, so that they cannot be displacedfrom their retaining grooves by a rolling or wedging action such asmight result if they were of the usual circular cross section.

What is claimed is':

A vise head having an elongated bearing extending therethrough from oneside to the op-- posite side, a relatively stationary jaw member at oneside of said head and having a tubular hub rotatably engaged in saidbearing, means for securing said hub in various positions of angularadjustment in said bearing, said relatively stationary jaw member havinga jaw element disposed at one end of the elongated bearing in the visehead and at one side of the axis of said bearing, and having a guard,substantially V- .shaped in cross section, provided at the opposite sideof said axis and projecting away from said one side of the vise head; abolt rod extending through said hub and slidable longitudinally therein;a companion, relatively movable jaw element on one end of said bolt rodat said one side of the axis of said bolt rod and opposed to the jawelement of the relatively stationary jaw member; said relatively movablejaw element having a guard element, substantially V-shaped incross-section, provided on the opposite side of the axis of said boltrod and projecting toward and in interlocking telescopic relation to theprojecting guard of the relatively stationary jaw member, whereby saidrelatively movable jaw elementwill be maintained in alignment with thejaw element of the relatively stationary jaw member in the longitudinalsliding adjustment of the bolt rod; said bolt rod having a screwthreaded end portion projecting from the hub at the opposite side of thevise head, and a hand nut engaged on said projecting screw threadedportion of the bolt rod and contacting an end of the hub to therebyapply thrust thereagainst for pulling th bolt rod and movable jawelement into cooperative relation with the jaw element of the relativelystationary jaw member.

MAX INGWER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Germany Mar. 16,1892

